QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

5 km WSW of Breckinridge, Oklahoma

· 5.2 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Garfield County 5 kmGrant County 41 kmNoble County 49 kmKingfisher County 54 kmAlfalfa County 59 kmLogan County 64 kmMajor County 69 kmKay County 72 kmPayne County 82 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 2.8 (ml)
Depth
5.2 km below the surface
Felt
no reports yet
Nearest
Garfield County, 5 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3707 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 36.4186, -97.7836. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Garfield County, OK 5 km (3 mi) N of here earthquakes near Garfield County
Grant County, OK 41 km (26 mi) S of here earthquakes near Grant County
Noble County, OK 49 km (31 mi) W of here earthquakes near Noble County
Kingfisher County, OK 54 km (33 mi) NNE of here earthquakes near Kingfisher County
Alfalfa County, OK 59 km (37 mi) SE of here earthquakes near Alfalfa County
Logan County, OK 64 km (39 mi) NNW of here earthquakes near Logan County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

46 earthquakes have been recorded within 50 km since this one.

  1. 2.8 3 km ENE of Jet, Oklahoma
  2. 2.8 8 km ESE of Hunter, Oklahoma
  3. 3.4 8 km W of Deer Creek, Oklahoma
  4. 2.7 1 km NW of Lucien, Oklahoma
  5. 3.2 8 km W of Deer Creek, Oklahoma
  6. 3.3 5 km W of Lucien, Oklahoma
  7. 3.3 5 km WNW of Lucien, Oklahoma
  8. 2.6 3 km SSE of Meno, Oklahoma
  9. 2.7 8 km W of Deer Creek, Oklahoma
  10. 3.0 8 km SSW of Marshall, Oklahoma
  11. 2.6 8 km NE of Marshall, Oklahoma
  12. 2.9 8 km NE of Marshall, Oklahoma
  13. 3.3 8 km NE of Marshall, Oklahoma
  14. 2.4 8 km S of Perry, Oklahoma
  15. 2.6 7 km E of Nescatunga, Oklahoma

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.